If there is a grade certificate, there is also a subsidy. The overall income is still good.
However, it is unrealistic to think that a good teacher will find a rich and good husband. This is determined by many factors, such as your social interaction, your living habits and so on.
To give you a blow, many teachers are not perfect. It depends on how well you handle others.
There must be channels and interpersonal relationships for gray income and finding objects. After all, gray income is not public, it depends on opportunities.